/*
 * Bittorrent Client using Qt and libtorrent.
 * Copyright (C) 2023  Vladimir Golovnev <glassez@yandex.ru>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * In addition, as a special exception, the copyright holders give permission to
 * link this program with the OpenSSL project's "OpenSSL" library (or with
 * modified versions of it that use the same license as the "OpenSSL" library),
 * and distribute the linked executables. You must obey the GNU General Public
 * License in all respects for all of the code used other than "OpenSSL".  If you
 * modify file(s), you may extend this exception to your version of the file(s),
 * but you are not obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 */

#pragma once

#include <QMetaType>
#include <QString>

class Tag final
{
public:
    Tag() = default;

    explicit Tag(const QString &tagStr);
    explicit Tag(const std::string &tagStr);

    bool isValid() const;
    bool isEmpty() const;

    QString toString() const noexcept;

    explicit operator QString() const noexcept;

    friend bool operator==(const Tag &, const Tag &) = default;

private:
    QString m_tagStr;
};

Q_DECLARE_METATYPE(Tag)

QDataStream &operator<<(QDataStream &out, const Tag &tag);
QDataStream &operator>>(QDataStream &in, Tag &tag);

template <>
struct std::hash<Tag>
{
    std::size_t operator()(const Tag &tag, const std::size_t seed = 0) const noexcept
    {
        return qHash(tag.toString(), seed);
    }
};
